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用直接合成法制备了Ｌａβ－Ａｌ２Ｏ３，固体电解质，用阻抗谱技术在８００－１５００℃测得其电导率为１０－６－１０－３Ｓ·ｍ－１不同组成样品的电导激活能在１．９５－２．０７ｅＶ之间。用Ｃｏｕｌｏｍｂ滴定抽Ｌａ法验证Ｌａβ－Ａｌ２Ｏ３的Ｌａ３＋的导电性；在５００－１６００℃下示差热分析的结果表明，Ｌａβ－Ａｌ２Ｏ３未发现相变和分解制得Ｌａβ－Ａｌ２Ｏ３固体电解质管，以纯Ｌａ作为参比电极，组成Ｌａ传感探头，在１４５０℃测得碳饱和铁液中、不同Ｌａ浓度下溶解态Ｌａ的活度具有规律性；与同时用氧传感探头测得氧的变化规律相符合．在实验条件下，Ｌａ传感探头经过连续多次使用，未见有开裂或渗漏现象，Ｌａ与Ｌａβ－Ａｌ２Ｏ３管不发生作用．
The Laβ-Al 2 O 3 and solid electrolytes were prepared by direct synthesis. The conductivity of 10-6-10-3S · m-1 samples with different compositions were measured by impedance spectroscopy at 800-1500 ℃. -2.07eV between. The results of differential thermal analysis at 500-1600 ℃ showed that Laβ-Al2O3 solid electrolyte tube was obtained without phase change and decomposition by Laβ-Al2O3, pure La was used as Reference electrode, the composition of La sensing probe, measured at 1450 ℃ carbon saturation of molten iron, La activity at different concentrations of La dissolved activity with regularity; and at the same time with the oxygen sensor probe measured changes in oxygen law consistent . In the experimental conditions, La sensor probe after repeated use, no cracking or leakage phenomenon, La and Laβ-Al2O3 tube does not play a role.